Plate-cutting apparatus



May 1, 1928.

P. oRzEl.

PLATE CUTTI NG APPARATUS Oginal Filed O01.. l2, 1920 2 Sheets-Sheet 1 12h/eases: flzyenar:

K W 5 j Paul afzfz,

W jllf @ffy P. ORZEL PLATE CUTTING May l, 1928.

APPARATUS briginal Filed oct. 12. 1920 2 sheets-snee: 2

Innen/a? PQM] rzel) (w j( 63W( Patented MayA 1, 1928.

UNITED STATES 1,668,085 PATENT ori-ica PAUL OBZEL, OF NEW YORK, N. Y.

i nuria-CUTTING nrranarus.

Application led October 18, 19x20, Serial No. 416,459. Renewed September 16, 1927.

This invention relates to `apparatus ffor cutting metal by the use of an Oxy-acetylene or similar burner, andrelates more particularly to devices for cutting holes in metal plates. i .A

One object of the invention is to provide such an apparatus whereby, by the aido a templet, a ole of a predetermined configuration may be cut lin the plate. e

.Another object is to `provide a suitable stand for interchangeably holding the templet in proper spaced relation to the plate to be cut, so that the operator may make his selection of any one of a large number of templets having holes of various configuration. j y

Another object is to provide a suitable means for holding the burner or Yblow pipe perpendicular tothe templet, so that t e hole de-marked by the blow pipe will always bear a. fixed and substantially pro ortional relation to the pattern of the` temp et.

Other objects of the invention are to provide suitable means for holding the templet stand in position for cuttin the hole at the desired place, and means` or clamping the stand in said position.

Other objects of the invention willappear as the description proceeds; and while herein minute details of the invention are disclosed, the invention isnot limited to these, since many and various changes may be made without departin from the scope or the invention as claime.

In the accompanying drawings showing by wa of example, several of many possible embo iments of the invention,

Figure 1 is a plan `of the templet stand showing a templet thereon, and themeans for positioning and clamping the stand in lace ;v i e j p Fig. 2 is a longitudinal central vertical sectional view through theapparatus; l

Fig. 3 is a plan view of the `face plate; and A Figs. 4 and 5 showtwo examples ofthe many possible forms of templets.

My improved apparatus is shown in position for cutting an opening 5 (Fig.2) in a metal plate 6. The apparatus itself comprises a box-like stand 8 laterally well ventilated as at 9 and open at the bottom and adapted to rest on said plate 6. The stand is open at the top and is provided with an Vinner iiange 10 disposed around and slightly spaced from the top edge of the stand to forma marginal recess receiving any one of. the several interchangeable templets 12 (Figs. 1 and 2), 12 (Flg. 4) and 12h (Fig. 5)'. The templets are adapted to rest on said flange andv are provided with a pattern opening 13, 13a or 13b slightly larger than the opening 5, 5l or 5" to be cut. Corner screws 15 passing through holes 16 (Fig. 4) secure the `templets to the iiange.

A face plate 20, ventilated (Fig. 2) with large holes 19 is adapted` to restv on the templet and has a central hub 2l having a bore therethrough having an enlarged `interioily threaded lower end 22 carrying a bushing 23 having a lower flange 24 and receiving an anti-friction roller 25 engageable with and guided by the edge of the patternY opening '1.3. A downwardly pointing burner or blow pipe 28 is secured in said bushing and hereby a set screw 27 in said hub, and the fare plate 'holds the `blow pipe always perpendicular to the templet so that the flame 3() will cut the plate always the same horizontal distance inward from the edge of the templet, thus cutting the hole 5 substantially the same shape as, but smaller than, the opening 13, the burner end being spaced away from the work to prevent injury to the jurner by blow-back from the work.

Means is provided for positioning and clamping the apparatus in place and will now be described. Anextension plate 32 ex tending from the lower edfre of said vstand 8 is provided with a pair` of parallel slots 33 (Fig. 1) and with a central depressed slideway 34 having a reduced inner end 35 forming shoulders 36. A slidel 38 slidable in said slide-way is provided with a central slot 39, a downwardly projecting pointer 40 at the inner end, and a pair of lateral lugs 41 `engaging said shoulders 36 when the pointer 40 engages over the point of the 1 stand is set in proper position for commencing cutting. A holding screw 44 in said slideway and said central slot is ada ted for holding the slide in any position o adjustment in the slot. j A clamping plate 45 (Fig. 2) under the edge of the plate 6 is heldby clamping bolts 46 passing through 'said parallel slots 33 clamping the apparatus in place.

The operation of the deviceis very simple. :The operator selects or has prepared forv a'templet of the desired shape and size and secures it in the stand 8 by means of the corner screws 15. He then pushes the slide 38 .inwardly until the lugs 41 engage lthe shoulder 36; whereupon the pointer 40 will indicate where will be the said position of the edge of the hole nearest t-he extension plate The pointer 4() is then placed upon the metalplate where this desired point of the edge is to be, whereupon the screws 46 may be movedto the edge of the plate 6 and clamped in position, thereby to hold the stand and templetfixed in the desired 'position. The blow pipe having been already secured inthe face plate, 'as shown in Fig. 2. the face plate is placed t'ace down upon the templet with the blow pipe projecting through the face plate and the roller 25 in contact with the edge of the hole 13. The blow pipe is then moved slowly around the edge of theteniplet, with the roller in cont-act with said edge until the hole 5 is completely out.

The screws 46 may be then loosened and the stand moved and positioned for the cut-` ting of another hole.

I claim:

1. In combination, a teinplet stand having a flange disposed around its inner edge; an interchangeable templet resting on said flange and provided with a pattern opening slightly larger than the opening to be out; a ventilated face plate adapted to rest on said templet and having a central hub having a bore therethrough having au enlarged interiorly threaded lower end; a bushing in said end having a lower flange; a roller on the bushing engageable with the edge of the pat-tein opening; a downwardly pointing blow pipe in said bushing and bore; and a set screw in said hub'and engaging said blow pipeA 2. In combination, a templet stand; an ex tension plate extending from the lower edge ofrsaid stand and provided with a pair of parallel slots perpendicular to the side of the stand; a clamping plate engageable under the edge of the plate to be eut; and clamping bolts passing through said parallel slots into said clamping plate tor clamping the apparatus in place.

3. In combination, a templet stand; an extension plate secured to the stand and provided with shoulders; a slide slidable on said etension and having a pointer; and a pair of lugs adapted to engage said shoulders when the pointer is in operative position.

4. In combination. a templet stand; an extension plate extending from the lower edge of said stand and provided with a central slide-way having a reduced inner end forming shoulders; a slide slidable in said slideway and provided with a central slot, a downwardly projecting pointerv at the inner enda and a pair of lateral lugs engaging said shoulders when the pointer is in operative position; and a holding screw in said slide-way and saidcen'tral slot for hold` ing the slide inthe slot.

5. In combination, a templet stand; an extension plate secured to the stand and provided with `shoulders; a slide slidable on said extension and having a pointer; and a pair of lugsadapted to engagefsaid shoul* ders when the pointer is in operative position; and a clamping device Vfor securing said extension and standto'the plateto be cut.

6. In combination; a templet; means for supporting the templet relative to a Work piece to be cut; 'a blow pipe guided by the templet; and means whereby said blow pipe is held by the templet at an angle to the teinplet.

7. In combination, a templet; means for supporting the ternplet relative to a work piece to be cut; a blow pipe guided bythe templet; and'means whereby said blow pipe is held by the templetagainst movement transverse to the templet'in one direction.

8. In combination; a templet having a templet opening; means for supporting the templet relative to a work piece -to bei cut; a blo\vpipe passed through said opening; a

guide member around the blow pipe con-v centric therewith and engaging the edgeof said opening. Y

'9.- `In comubination, ai templet; .means vfor supporting the templet relativeto a'work piece to be cut; a blow pipe guided by the templet; and means whereby said :blow ipe is entirely supported by the templet lield entirely'by the teinplet against movement transverse to the templet 'toward the work n piece. Y g Y 10. In combination, a templet; meansl for supporting thev tem let relative to a work piece to be cut; a b ow pipe guided by the edge of the templetf; `and'neans including a face plate disposed around the blow pipe und engaging the outer tace ofthe templet, whereby said blow pipe is held by the face plate and templet against movement transversetoV the templet toward the workpiece. 11. VIn combination, atemplet; means for supporting the templet relative` to a work piece to be cut; a blow pi and means inclnding a member dispose Varound and. concentric with the blow pipe and respectively engaging the outer face and guiding edge of the templet, whereby `said blow pipe is guided by the templet and held by the .templet against movement transverse to the templet toward the work piece. l

12. In combinatiorna templet'meansifor supporting the templet relative to va work `piece tovbe out; a blow pipe; and means lincluding a wide face plate disposed 4around the blow pipe and a roller disposed around and concentric :with the blow pipe, said roller and face plate respectively engaging.

1,ees,osu

thc outer face and iding edge of the teinplet,whereb said bl11 templet and7 held by the templet against movement transverse to the templet 'toward 4the work piece.

18. In combination, a templet; means for supporting the templet relative to a work piece `to be cut;a blow pipe uided by the templet; and a wide face p ate provided with large intramarginal Ventilating openings and disposed aroundthe blow pipe and engaging the outer face and guiding edge of the templet, whereby said blow pipe is held by the templet against movement transverse to the templet in one direct-ion.

14. In combination, a blow pipe; a templet ior guidingthe blow pipe when the latter is held by hand; and a Wide flame deiector engaging the templet and protecting the hand from slag and the heat of the flame.

15. In combination, a. templet; a stand for supporting the templet relative to the work piece in any one of a plurality of predetermined positions; and means forlocating the templet in any one of said positions.

16. In combination, a stand adapted to rest on a work piece to be cut and lprovided at the top with a frame provided with an inner flange; and a templet resting in said frameon said flange. Y V

17. In combination, a templet having a templet opening; a stand for supporting the templet in spaced relation relative to the work piece;and means forming a socket receiving the templet for locating the templet in any one of a plurality of predetermined positions on the stand."

18. VIn combination, a templet having `a templet opening; a stand for supporting the templet relative to the work piece; and means on said stand for holding the templet in any one of a plurality of predetermined positions of rotation in the plane of the templet on the constant axis of the templet opening.

I9. In combination, a templet having a templet opening; and a stand for supporting kthe templet relative to the work piece; and

means on said stand for holdinr the templet in predetermined positions 180 degrees apart and inthe kplane of the templet.

20. Inl combination, a templet having a templet opening; a stand for supporting the templet relative to the work piece; and means on said stand for holding the templet in any one of four predetermined positions 9() degrees apart.

21. In combination, a templet having Va templet opening; a stand for supporting the templet relative to the work piece means on said stand for locating the templet any one of a plurality of positions apart and in the plane of the templet witht-he templet on the y axis of the templet opening and on a con-p ow pipe is guided bythe stant axis transverse to the templet; and means for fastening the templet after it is thus located. v y

22. In combination, a tem let; and a supporting stand therefor a apted to rest against a plate to be cut and extending on'all sides laterally beyond the geometric projection of the active edge of the templet to said plate.`

. 23. In combination, a templet; and a stand therefor adapted to rest on a plate to be cut and laterally extending on all sides beyond the downward projection of the active edge ot the templet.

24. In combination, a stand having a top `frame and bottom frame adapted to rest on a plate to be cut, the top being of smaller dimensions than the bottom frame; and a templet carried by said top frame parallel with and spaced from said plate.

` 25. In combination, a box like stand open at the top and bottom and adapted to rest on l a plate to be cut and provided in its side walls with a plurality of Ventilating openings; and a templetresting in said open top parallel with and spaced from said plate.

26. In combination, a templet stand adapted to engage a work piece to Vbe out; a templet thereon having a guiding edge; a blow pipe guided by said edge and adapted to cut said piece with its flame; and a pointer secured to said stand and havin its indicating end disposable adjacent to sai piece.

Y 27. 1n combination, a templet stand adapted to engage a work piece to be cut; a templet thereon havin a guiding edge; a blow pipe guided b sai edge and adapted to cut said piece wit its flame; and a pointer movably secured to said stand and retractible from the path oi' the Hallie and havin its i11- dicating end dis osable adjacent to said piece near the path oi the cuttingY 28. In combination, a templet stand adapted to engage a Work piece to be cut; a templet thereon havin a guiding edge; a blow pipe guided by saidy edge and adapted to cut said piece with its flame; a pointer movably secured `to said stand and retractible from thepathof theflame and having its indicating end disposable adjacent to said piece near the path of the cutting; and means for limiting the movement of the pointer relative to said path.

29. In combination, a templet stand adapted to engage a work piece to be cut; a templet thereon havin a guiding edge; a blow pipe guided by sai edge and adapted to cut said piece with its flame; and a pointer secured to said stand and having its indicating end disposable adjacent to said piece at a predetermined start-ing point of the path of 

